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Leak SiteState AGConfirmed9 records · 8 statesLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedcl0phigh sensitivity
Merged incident · 9 records

MASTEC, INC. — August 2025 breach

Clustered 9 records across 8 jurisdictions: 8 filings and 1 leak-site claim · filing window Jun 4, 2026 → Jun 9, 2026 (dated filings only). View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

9 records

States

8

Affected · reported

25,220

First → last dated filing

Jun 4, 2026 → Jun 9, 2026

Merge confidence

100%

incident inc_d27493c7b8704576 · merged by human · confidence 100%

Confirmed breach. Merged as one breach: 8 regulatory filings and 1 unverified claim. The filings describe unauthorized access. Intrusion Aug 1, 2025–Aug 31, 2025, discovered Oct 1, 2025 — the first regulatory filing landed 246 days later; 1 later filing was flagged late. 25,220 individuals reported across the linked filings. Data reported: Government ID, Identity (basic), Financial account, and 4 more. Notifications rolled out on a 5-day schedule across 7 dated filings beginning Jun 4, 2026. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay
246days

Discovered → first regulatory filing

Discovery variance
204days

Range of discovered_at dates across filings

Leak precedence
216days before filing

Days between the first sighting of the earliest-seen leak-site claim and the first regulatory filing. Measured from when the aggregator first saw the post, not the crew's own (often earlier) date. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.

Filing span
5days

Time between earliest and latest filing

Not recorded for this incident

Materiality delta · SEC filing delay — no SEC 8-K in this cluster.

Regulatory clocksLeak gap✗ Leak >180dMassachusetts✗ MA AG >90dFull clock table in Litigation Timeline

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